Uchimata Makikomi is a throw involving an inner thigh lift with the leg, while wrapping the arm and falling.
Judo is made up of throwing (nage), grappling (katame or ‘newaza’) and striking (atemi) techniques.
The throwing techniques are split into standing techniques (tachi-waza) and sacrifice [falling] techniques (sutemi-waza). In turn, the standing techniques are split into hand techniques (te-waza), hip techniques (koshi-waza) and foot techniques (ashi-waza).
See a full demonstration of different nage-waza (throwing techniques) at: https://www.youtube.com/watch?v=niPb0NBqBWA