Literal: a half-filled water pot (gugari) tends to spill while being carried.
2.
IndiaHindi-speaking regionsproverbialcolloquial
Figurative: someone with limited knowledge, skill, or resources makes more noise, shows off, or causes more trouble than one who is full or competent; implies that superficial competence often leads to greater visible faults or boastfulness.
Examples:
HI: एक कहावत है "अधजल गगरी छलकत जाय"
EN: There's an old saying which goes... "The Squeaky Wheel Gets the Grease"